The machines start at $1,439 for the 2.5 GHz i5 model with 128 GB SSD and 8GB of RAM, a $260 savings over the $1,699 sticker price of a new unit. Apple's also offering the 2.5 GHz i5 model with 256 GB SSD and 8 GB of RAM for $1,699 ($300 off, normally $1,999) and the 2.9 GHz i7 model with 512 GB SSD and 8 GB of RAM for $2,289 ($410 off, normally $2,699). Shipping times for all three refurbished models run one to three days and, as usual, stock is limited.